Algae all gone

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Algae all gone #33699 07/29/06 01:02 AM
Joined: Aug 2004 Posts: 23 Newark,OH M MarneMeister OP Member
OP MarneMeister Member M Joined: Aug 2004 Posts: 23 Newark,OH	Maybe someone out there might have an answer, but 99% of all the algae in my pond has disappeared over the past week. Up until the past week my pond has had some mats of FA on the surface, some days worse than others, but usually somewhere around 10% surface coverage, with plenty FA on submerged structure. About 10 days ago I noticed the visibility went from 30 inches with secchi disk readings to over 48 inches. Then I noticed a gradual reduction in the amount of FA in the pond to where now there are no floating mats and there is very little on submerged structure. pH is 7.1 Alkalinity 39 ppm and DO 6 ppm 4 ft below surface. The pond is 2 years old and I never applied any chemical or natural treatments for FA. I'm not complaining, the water is perfect for swimming now and due to the hot weather we've been having, we've been doing alot of it $\:\)$ I am curious though as to what has happened. Any thoughts?